CN114535554A - Multi-fuel oxygen-enriched steel ladle baking system - Google Patents
Multi-fuel oxygen-enriched steel ladle baking system Download PDFInfo
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- CN114535554A CN114535554A CN202210162995.6A CN202210162995A CN114535554A CN 114535554 A CN114535554 A CN 114535554A CN 202210162995 A CN202210162995 A CN 202210162995A CN 114535554 A CN114535554 A CN 114535554A
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- oxygen
- value gas
- pipeline
- burner
- calorific value
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The invention relates to a multi-fuel oxygen-enriched ladle baking system, and belongs to the technical field of metallurgical industry. The multi-fuel oxygen-enriched steel ladle baking system comprises a steel ladle and a steel ladle cover, wherein a burner is arranged on the steel ladle cover; the burner comprises a high calorific value gas pipeline, a low calorific value gas pipeline, an air pipeline, an oxygen pipeline and a combustion channel, the output ends of the high calorific value gas pipeline, the low calorific value gas pipeline, the air pipeline and the oxygen pipeline are respectively communicated with the combustion channel, the high calorific value gas pipeline and the low calorific value gas pipeline are concentrically arranged, and the air pipeline and the oxygen pipeline are respectively arranged in the circumferential direction of the burner. The burner can be suitable for fuels with different heat values, and can use high heat value fuel or low heat value fuel or both high heat value fuel and low heat value fuel under the condition of not replacing the burner, thereby facilitating enterprises to realize the optimized configuration of energy sources and maximally realizing energy conservation and emission reduction.
Description
Technical Field
The invention belongs to the technical field of metallurgical industry, and relates to a multi-fuel oxygen-enriched ladle baking system.
Background
Ladle baking is an energy consumption unit in the steel production process, the defects of high energy consumption, extensive control and the like generally exist at present, a steel mill has a large amount of fuel resources such as various heat value coal gas, oxygen and the like, and how to utilize surplus fuel of the steel mill on ladle baking to achieve the purposes of reducing energy consumption and improving baking accuracy becomes a problem to be solved urgently.
Disclosure of Invention
In view of the above, the present invention is directed to a multi-fuel oxygen-rich ladle baking system,
in order to achieve the purpose, the invention provides the following technical scheme:
a multi-fuel oxygen-enriched ladle baking system comprises a ladle and a ladle cover, wherein a burner is arranged on the ladle cover;
the burner comprises a high calorific value gas pipeline, a low calorific value gas pipeline, an air pipeline, an oxygen pipeline and a combustion channel, wherein the output ends of the high calorific value gas pipeline, the low calorific value gas pipeline, the air pipeline and the oxygen pipeline are respectively communicated with the combustion channel, the high calorific value gas pipeline and the low calorific value gas pipeline are concentrically arranged, and the air pipeline and the oxygen pipeline are respectively arranged in the circumferential direction of the burner.
Optionally, the direction from the input end to the output end of the high calorific value gas pipeline is sequentially provided with: the high-calorific-value gas automatic cut-off valve, the high-calorific-value gas flowmeter, the high-calorific-value gas automatic regulating valve and the high-calorific-value gas manual regulating valve.
Optionally, the direction from the input end to the output end of the low-calorific-value gas pipeline is sequentially provided with: the low-heat value gas automatic cut-off valve, the low-heat value gas flowmeter, the low-heat value gas automatic regulating valve and the low-heat value gas manual regulating valve.
Optionally, the air pipeline is sequentially provided with, in the direction from the input end to the output end: the air automatic shut-off valve, air flowmeter, automatic air regulating valve, manual air regulating valve.
Optionally, the oxygen pipeline is provided with: the oxygen automatic cut-off valve, the oxygen flow meter, the oxygen automatic regulating valve, the primary oxygen manual regulating valve and the secondary oxygen manual regulating valve.
Optionally, the high calorific value gas channel is located on an axis of the burner, a high calorific value gas nozzle is arranged on the high calorific value gas channel, the high calorific value gas nozzle is communicated with the combustion channel, and the high calorific value gas nozzle may be a nozzle parallel to the axis of the burner, a plurality of nozzles parallel to the axis of the burner, or a plurality of nozzles forming an included angle of 0-30 degrees with the axis of the burner.
Optionally, the proportion of the primary oxygen is 30-60%, the number of the primary oxygen nozzles is 2-6, the primary oxygen nozzles are uniformly arranged along the circumference of the central line of the burner, the number of the secondary oxygen nozzles is 2-6, the primary oxygen nozzles and the secondary oxygen nozzles are uniformly arranged along the circumference of the central line of the burner, the included angle between the primary oxygen nozzles and the central line of the burner is 0-10 degrees and faces the direction of the central line of the burner, the flow rate of the primary oxygen nozzles is 30-70Nm/s, and the flow rate of the secondary oxygen nozzles is 100 Nm/s.
Optionally, the proportion of the primary air is 30% -60%, the number of the primary air jet holes is 2-6, the primary air jet holes are uniformly distributed along the circumference of the center line of the burner, the number of the secondary air jet holes is 2-6, and the secondary air jet holes are uniformly distributed along the circumference of the center line of the burner.
Optionally, a temperature detection device for detecting the baking temperature of the ladle is arranged on the ladle cover.
Optionally, a high-temperature camera is arranged on the steel ladle cover, and the falling condition of the refractory material in the steel ladle is identified and analyzed through an image of the camera.
The invention has the beneficial effects that:
the ladle baking system can be suitable for fuels with different heat values, can use high heat value fuel or low heat value fuel under the condition of not replacing a burner or simultaneously use the high heat value fuel and the low heat value fuel, is convenient for enterprises to realize the optimal configuration of energy sources, and realizes the energy conservation and emission reduction to the maximum extent.
The steel ladle baking system can adopt air combustion supporting, oxygen-enriched combustion supporting or oxygen combustion supporting, on one hand, energy saving is realized through oxygen-enriched combustion, meanwhile, the stability of low-calorific-value gas combustion is improved through oxygen-enriched combustion, and a steel mill can select oxygen-enriched concentration according to the oxygen configuration condition of the whole mill.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For a better understanding of the objects, aspects and advantages of the present invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a diagram of a multi-fuel oxygen-enriched ladle baking system of the present invention;
FIG. 2 is a schematic view of a nozzle structure according to the present invention;
FIG. 3 is another schematic view of the nozzle structure of the present invention;
FIG. 4 is a schematic view of the structure in the direction A of FIG. 3;
FIG. 5 is a schematic view of the high calorific value gas nozzle structure of the present invention;
fig. 6 is a schematic view of the low heating value fuel gas nozzle structure of the present invention.
Reference numerals:
the system comprises a steel ladle 1, a steel ladle cover 2, a temperature detection device 21, a high-temperature camera 22, a multi-fuel oxygen-enriched burner 3, a high-calorific-value gas pipeline 4, a high-calorific-value gas automatic cut-off valve 41, a high-calorific-value gas flowmeter 42, a high-calorific-value gas automatic regulating valve 43, a high-calorific-value gas manual regulating valve 44, a low-calorific-value gas pipeline 5, a low-calorific-value gas automatic cut-off valve 51, a low-calorific-value gas flowmeter 52, a low-calorific-value gas automatic regulating valve 53, a low-calorific-value gas manual regulating valve 54, an air pipeline 6, an air automatic cut-off valve 61, an air flowmeter 62, an air automatic regulating valve 63, an air manual regulating valve 64, an oxygen pipeline 7, an oxygen automatic cut-off valve 71, an oxygen flowmeter 72, an oxygen automatic regulating valve 73, a primary oxygen manual regulating valve 74, a secondary oxygen manual regulating valve 75, a multi-fuel oxygen-enriched burner 3, a high-calorific-value gas channel 31, a high-calorific-value gas nozzle 311, The low-calorific-value gas burner comprises a low-calorific-value gas channel 32, a low-calorific-value gas nozzle 321, an air channel 33, a primary air channel 331, a secondary air channel hole 332, a primary air outlet 333, a secondary air outlet 334, an oxygen channel 34, a primary oxygen channel 341, a secondary oxygen channel 342, a primary oxygen nozzle 343, a secondary oxygen nozzle 344, a primary oxygen outlet 345, a secondary oxygen outlet 346, a burner brick 35, a combustion channel 351, a high-calorific-value gas single straight nozzle 311-1, a high-calorific-value gas multi-straight nozzle 311-2, a high-calorific-value gas multi-inclined nozzle 311-3, a low-calorific-value gas straight nozzle 321-1, a low-calorific-value gas swirling nozzle 321-2 and a low-calorific-value gas swirling sheet nozzle 321-3.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
The utility model provides a many fuel oxygen boosting ladle baking system, includes ladle 1 and ladle cover 2 be provided with nozzle 3 on the ladle cover 2, nozzle 3 includes high calorific value gas pipeline 4, low calorific value gas pipeline 5, air pipeline 6, oxygen pipeline 7 and burning passageway 351, high calorific value gas pipeline 4 low calorific value gas pipeline 5 air pipeline 6 the output of oxygen pipeline 7 respectively with burning passageway 351 intercommunication, just high calorific value gas pipeline 4 with low calorific value gas pipeline 5 sets up with one heart, air pipeline 6 with oxygen pipeline 7 sets up respectively the circumferencial direction of nozzle. The high-calorific-value gas burner can be suitable for fuels with different calorific values, high-calorific-value fuel or low-calorific-value fuel can be used under the condition that a burner is not replaced, or the high-calorific-value fuel and the low-calorific-value fuel are used simultaneously, so that the enterprise can conveniently realize the optimized configuration of energy sources, the energy conservation and emission reduction can be realized to the greatest extent, air combustion supporting, oxygen-enriched combustion supporting or oxygen combustion supporting can be adopted, on one hand, the energy conservation is realized through oxygen-enriched combustion, meanwhile, the stability of low-calorific-value gas combustion is improved through the oxygen-enriched combustion, and a steel mill can select the oxygen-enriched concentration according to the oxygen configuration condition of the whole mill.
The burner 3 is connected with a high-calorific-value gas pipeline 4, a low-calorific-value gas pipeline 5, an air pipeline 6 and an oxygen pipeline 7, the burner 3 is positioned in the center of the ladle cover 2, the burner 3 can burn high-calorific-value gas, low-calorific-value gas or two kinds of calorific-value gas, and the burner 3 can be used for air combustion supporting, oxygen-enriched combustion supporting or pure oxygen combustion supporting.
As shown in fig. 2 to 4, the burner 3 includes a high calorific value gas channel 31 located at the center, a low calorific value gas channel 32 disposed at the periphery of the high calorific value gas channel 31, a primary oxygen channel 341 disposed at the periphery of the low calorific value gas channel 32, a secondary oxygen channel 342 disposed at the periphery of the primary oxygen channel 341, and an air channel 33 disposed at the periphery of the low calorific value gas channel 31, a burner brick 35 is disposed on the burner 3, a combustion channel 351, a primary air channel 331, a secondary air channel 332, a primary oxygen nozzle 343, and a secondary oxygen nozzle 344 are disposed on the burner brick 35, the high calorific value gas outlet 311, the low calorific value gas outlet 321, the primary oxygen outlet 345, and the primary air outlet 333 are communicated with the combustion channel 351, and the secondary oxygen outlet 346 and the secondary air outlet 334 are located on an outlet end face of the burner brick 35.
The structure of the high heating value gas nozzle 311 is shown in fig. 5: the high-calorific-value gas nozzle 311 can be arranged as a nozzle 311-1 parallel to the axis 10 of the burner, a plurality of nozzles 311-2 parallel to the axis 10 of the burner or a plurality of nozzles 311-3 forming an included angle beta with the axis of the burner, and the included angle beta is 0-30 degrees.
The structure of the low heating value gas spout 321 is shown in fig. 6: the low-calorific-value gas nozzle 321 can be arranged as an annular nozzle parallel to the axis of the burner, a plurality of direct-current nozzles 321-1 parallel to the axis of the burner, a plurality of swirl nozzles 321-2, a nozzle formed by combining the direct-current nozzles 321-1 with the swirl nozzles 321-2, or a swirl plate structure 321-3, and the swirl angle of the swirl nozzles 321-2 and the swirl plates 321-3 is 15-45 degrees.
The proportion of primary oxygen of the burner 3 is 30-60%, the number of the primary oxygen nozzles 343 is 2-6, the primary oxygen nozzles are uniformly arranged along the circumference of the center line of the burner 3, the number of the secondary oxygen nozzles 344 is 2-6, the primary oxygen nozzles 343, the secondary oxygen nozzles 344 and the center line of the burner are uniformly arranged along the circumference of the center line of the burner 3, the included angle between the primary oxygen nozzles 343, the secondary oxygen nozzles 344 and the center line of the burner is 0-10 degrees, the included angle faces the direction of the center line of the burner 3, the flow rate of the primary oxygen nozzles 345 is 30-70Nm/s, the flow rate of the secondary oxygen nozzles 346 is 100-200Nm/s, the primary oxygen is mainly used for stabilizing combustion flame, and the secondary oxygen is mainly used for ensuring flame length, rigidity and stirring airflow.
The proportion of primary air of the burner 3 is 30-60%, the number of the primary air injection holes 331 is 2-6, the primary air injection holes are uniformly arranged along the circumference of the center line of the burner 3, and the number of the secondary air injection holes 332 is 2-6, and the secondary air injection holes are uniformly arranged along the circumference of the center line of the burner 3.
As shown in fig. 1, the burner 3 is connected to a high calorific value gas pipeline 4, a low calorific value gas pipeline 5, an air pipeline 6, and an oxygen pipeline 7.
The high calorific value gas pipeline 4 is sequentially provided with an automatic shut-off valve 41, a flowmeter 42, an automatic regulating valve 43 and a manual regulating valve 44; the low-calorific-value gas pipeline 5 is sequentially provided with an automatic shut-off valve 51, a flowmeter 52, an automatic regulating valve 53 and a manual regulating valve 54; the air pipeline 6 is sequentially provided with an automatic cut-off valve 61, a flowmeter 62, an automatic regulating valve 63 and a manual regulating valve 64; the oxygen pipeline 7 is sequentially provided with an automatic shut-off valve 71, a flow meter 72 and an automatic regulating valve 73, a pipeline behind the automatic regulating valve 73 is divided into two paths which are respectively connected with a primary oxygen channel 341 and a secondary oxygen channel 342 on the burner 3, and pipelines in front of the primary oxygen channel 341 and the secondary oxygen channel 342 are respectively provided with manual regulating valves 74 and 75.
As shown in fig. 1, a temperature detecting device 21 is provided on the ladle cover 2 for detecting the baking temperature of the ladle 1.
As shown in figure 1, a high-temperature camera 22 is arranged on the steel ladle cover 2, the falling condition of the refractory material in the steel ladle 1 is identified and analyzed through the image of the camera 22, and when the refractory material falls off greatly to influence the use of the steel ladle 1, a prompt of an overhaul signal is sent.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. The multi-fuel oxygen-enriched ladle baking system is characterized by comprising a ladle and a ladle cover, wherein a burner is arranged on the ladle cover;
the burner comprises a high calorific value gas pipeline, a low calorific value gas pipeline, an air pipeline, an oxygen pipeline and a combustion channel, wherein the output ends of the high calorific value gas pipeline, the low calorific value gas pipeline, the air pipeline and the oxygen pipeline are respectively communicated with the combustion channel, the high calorific value gas pipeline and the low calorific value gas pipeline are concentrically arranged, and the air pipeline and the oxygen pipeline are respectively arranged in the circumferential direction of the burner.
2. The multi-fuel oxygen-enriched ladle baking system as claimed in claim 1, wherein the high calorific value gas pipeline is sequentially provided with, in the direction from the input end to the output end: the device comprises a high-calorific-value gas automatic cut-off valve, a high-calorific-value gas flowmeter, a high-calorific-value gas automatic regulating valve and a high-calorific-value gas manual regulating valve.
3. The multi-fuel oxygen-enriched ladle baking system as claimed in claim 1, wherein the low heating value gas pipeline is sequentially provided with, in the direction from the input end to the output end: the low-heat value gas automatic cut-off valve, the low-heat value gas flowmeter, the low-heat value gas automatic regulating valve and the low-heat value gas manual regulating valve.
4. The multi-fuel oxygen-rich ladle baking system as claimed in claim 1, wherein there are sequentially provided in the direction from the input end to the output end of the air pipeline: the automatic air shut-off valve, air flowmeter, automatic air regulating valve, manual air regulating valve.
5. The multi-fuel oxygen-rich ladle baking system of claim 1, wherein there are sequentially provided in the direction from the input end to the output end of the oxygen pipeline: the oxygen automatic cut-off valve, the oxygen flow meter, the oxygen automatic regulating valve, the primary oxygen manual regulating valve and the secondary oxygen manual regulating valve.
6. The multi-fuel oxygen-enriched ladle baking system as claimed in claim 1, wherein the high calorific value gas channel is located on the axis of the burner, the high calorific value gas channel is provided with a high calorific value gas nozzle, the high calorific value gas nozzle is communicated with the combustion channel, and the high calorific value gas nozzle can be arranged as a nozzle parallel to the axis of the burner, a plurality of nozzles parallel to the axis of the burner, or a plurality of nozzles having an included angle of 0-30 degrees with the axis of the burner.
7. The multi-fuel oxygen-rich ladle baking system as recited in claim 1, wherein the primary oxygen ratio is 30-60%, the number of the primary oxygen nozzles is 2-6, the primary oxygen nozzles are uniformly arranged along the circumference of the burner centerline, the number of the secondary oxygen nozzles is 2-6, the primary oxygen nozzles and the secondary oxygen nozzles are uniformly arranged along the circumference of the burner centerline, the included angle between the primary oxygen nozzles and the burner centerline is 0-10 °, and the primary oxygen nozzles and the secondary oxygen nozzles face the burner centerline direction, the primary oxygen nozzle flow rate is 30-70Nm/s, and the secondary oxygen nozzle flow rate is 100-200 Nm/s.
8. The multi-fuel oxygen-rich ladle baking system of claim 1, wherein the proportion of primary air is 30% -60%, the number of primary air injection holes is 2-6, and the primary air injection holes are uniformly arranged along the circumference of the center line of the burner, and the number of secondary air injection holes is 2-6, and the secondary air injection holes are uniformly arranged along the circumference of the center line of the burner.
9. The multi-fuel oxygen-rich ladle baking system as recited in claim 1, wherein the ladle cover is provided with a temperature detection device for detecting a baking temperature of the ladle.
10. The multi-fuel oxygen-enriched ladle baking system as claimed in claim 1, wherein the ladle cover is provided with a high temperature camera, and the falling of the refractory material in the ladle is identified and analyzed by the image of the camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210162995.6A CN114535554A (en) | 2022-02-22 | 2022-02-22 | Multi-fuel oxygen-enriched steel ladle baking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210162995.6A CN114535554A (en) | 2022-02-22 | 2022-02-22 | Multi-fuel oxygen-enriched steel ladle baking system |
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| CN114535554A true CN114535554A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210162995.6A Pending CN114535554A (en) | 2022-02-22 | 2022-02-22 | Multi-fuel oxygen-enriched steel ladle baking system |
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| DE202004012566U1 (en) * | 2004-03-04 | 2004-11-25 | Walter Brinkmann Gmbh & Co. Kg | Drying and heating arrangement for newly constructed casting ladle, comprises gas collection device around ladle cover connected to gas suction device |
| CN202630052U (en) * | 2012-06-14 | 2012-12-26 | 中科为宇（北京）科技发展有限公司 | Combustor for high calorific value gas and low calorific value gas |
| CN203177179U (en) * | 2013-03-27 | 2013-09-04 | 鞍钢股份有限公司 | Oxygen enrichment burning nozzle capable of quickly improving temperature of furnace end |
| CN108006640A (en) * | 2017-12-21 | 2018-05-08 | 靖江博鑫柯曼燃烧器制造有限公司 | One kind uses oxygen-enriched burner |
| CN109099422A (en) * | 2018-09-20 | 2018-12-28 | 张家港市鑫州焊割机械有限公司 | Low combustion value furnace gas compound burner |
| US20200016652A1 (en) * | 2017-03-13 | 2020-01-16 | Taiyo Nippon Sanso Corporation | Method and device for heating object to be heated |
| CN112902159A (en) * | 2021-01-22 | 2021-06-04 | 成都光华科技发展有限公司 | Three-channel multi-oxygen burner |
| CN112944344A (en) * | 2021-02-09 | 2021-06-11 | 鞍钢股份有限公司 | Oxygen jet flow multistage dispersion combustion roaster |
-
2022
- 2022-02-22 CN CN202210162995.6A patent/CN114535554A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6352680B1 (en) * | 1998-06-29 | 2002-03-05 | The Boc Group Plc | Partial combustion of hydrogen sulphide |
| DE202004012566U1 (en) * | 2004-03-04 | 2004-11-25 | Walter Brinkmann Gmbh & Co. Kg | Drying and heating arrangement for newly constructed casting ladle, comprises gas collection device around ladle cover connected to gas suction device |
| CN202630052U (en) * | 2012-06-14 | 2012-12-26 | 中科为宇（北京）科技发展有限公司 | Combustor for high calorific value gas and low calorific value gas |
| CN203177179U (en) * | 2013-03-27 | 2013-09-04 | 鞍钢股份有限公司 | Oxygen enrichment burning nozzle capable of quickly improving temperature of furnace end |
| US20200016652A1 (en) * | 2017-03-13 | 2020-01-16 | Taiyo Nippon Sanso Corporation | Method and device for heating object to be heated |
| CN108006640A (en) * | 2017-12-21 | 2018-05-08 | 靖江博鑫柯曼燃烧器制造有限公司 | One kind uses oxygen-enriched burner |
| CN109099422A (en) * | 2018-09-20 | 2018-12-28 | 张家港市鑫州焊割机械有限公司 | Low combustion value furnace gas compound burner |
| CN112902159A (en) * | 2021-01-22 | 2021-06-04 | 成都光华科技发展有限公司 | Three-channel multi-oxygen burner |
| CN112944344A (en) * | 2021-02-09 | 2021-06-11 | 鞍钢股份有限公司 | Oxygen jet flow multistage dispersion combustion roaster |
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